1. CS6 came out in 2012. According to the BLS calculator, $400 in 2012 is $532 today: https://data.bls.gov/cgi-bin/cpicalc.pl?cost1=400.00&year1=2...
2. You're cherry picking the worst one, do the math for CS6 After Effects at $999 (~$1.3k today) vs $21/month and you only break even after >5 years.